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I'm pretty sure that Html 5 doesn't work, didn't work on Mozilla FF 30, upgraded to 31, still doens't work.

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So I can't get WebM to work and it doesn't seem to work in IE. My last 5 crash reports https://crash-stats.mozilla.com/report/index/5ab8a39f-c1e6-4d02-8c58-5af382140731 https://crash-stats.mozilla.com/report/index/ad29b3d6-395e-4db6-9425-e3bef2140731 https://crash-stats.mozilla.com/report/index/91767a78-d289-4c8c-bc59-27f0b2140731 https://crash-stats.mozilla.com/report/index/ae4bd95a-8259-4d3e-a687-ada752140731 https://crash-stats.mozilla.com/report/index/a5aafc22-1740-4154-9bff-54a122140731 I went on this site and it said that webm should work but then the tests below clearly show it not working.

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This is what it's showing

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Can anybody help?

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All three of them that show in the second screenshot including the H.264 version work for me on Linux.

Are there any media prefs user set (bold) on the about:config page?

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

See also Windows Media Feature Pack for Windows 7 N and for Windows 7 KN:

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For the about:config, if you mean anything that starts with media.Whatever then, no nothing is bold.

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I tried both of those media pack installers and both said that they weren' t applicable for my computer.

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Hardware acceleration is off and the problem still occured in safemode, im also getting a crash reporter after everytime i close firefox

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AdapterDeviceID: 0x6760 AdapterVendorID: 0x1002 Add-ons: %7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:31.0,%7Bfe272bd1-5f76-4ea4-8501-a05d35d823fc%7D:2.1.3,%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D:2.6.4,olddefaultimagestyle%40dagger2-addons.mozilla.org:3.0.5 AvailablePageFile: 5998108672 AvailablePhysicalMemory: 2614001664 AvailableVirtualMemory: 3575115776 BIOS_Manufacturer: American Megatrends Inc. BlockedDllList: BreakpadReserveAddress: 40697856 BreakpadReserveSize: 41943040 BuildID: 20140716183446 CrashTime: 1407134337 EMCheckCompatibility: true Email: FramePoisonBase: 00000000f0de0000 FramePoisonSize: 65536 InstallTime: 1406057827 Notes: AdapterVendorID: 0x1002, AdapterDeviceID: 0x6760, AdapterSubsysID: 00000000, AdapterDriverVersion: 8.802.1.0 D2D? D2D+ DWrite? DWrite+ D3D10 Layers? D3D10 Layers+ ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SecondsSinceLastCrash: 1024 StartupTime: 1407133318 SystemMemoryUsePercentage: 38 Theme: classic/1.0 Throttleable: 1 TotalPageFile: 8548769792 TotalPhysicalMemory: 4275339264 TotalVirtualMemory: 4294836224 Vendor: Mozilla Version: 31.0 Winsock_LSP: MSAFD Tcpip [TCP/IP] : 2 : 1 :

MSAFD Tcpip [UDP/IP] : 2 : 2 : %SystemRoot%\system32\mswsock.dll 
MSAFD Tcpip [RAW/IP] : 2 : 3 :  
MSAFD Tcpip [TCP/IPv6] : 2 : 1 : %SystemRoot%\system32\mswsock.dll 
MSAFD Tcpip [UDP/IPv6] : 2 : 2 :  
MSAFD Tcpip [RAW/IPv6] : 2 : 3 : %SystemRoot%\system32\mswsock.dll 
RSVP TCPv6 Service Provider : 2 : 1 :  
RSVP TCP Service Provider : 2 : 1 : %SystemRoot%\system32\mswsock.dll 
RSVP UDPv6 Service Provider : 2 : 2 :  
RSVP UDP Service Provider : 2 : 2 : %SystemRoot%\system32\mswsock.dll 
MSAFD RfComm [Bluetooth] : 2 : 1 : 

useragent_locale: en-US

This report also contains technical information about the state of the application when it crashed.

Modified by NoahSUMO

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can anyone take a look please, i hat using chrome